The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 2006
Filed:
Aug. 27, 2004
Applicants:
Kenichiro Ohara, Tokyo, JP;
Masashi Oki, Tokyo, JP;
Inventors:
Kenichiro Ohara, Tokyo, JP;
Masashi Oki, Tokyo, JP;
Assignee:
Renesas Technology Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/38 (2006.01); H03F 3/217 (2006.01);
U.S. Cl.
CPC ...
Abstract
A class D amplifier defines different sets of resampled points A and B for channels chA and chB of an input digital audio signal, extracts an interpolation signal of the digital audio signal at the resampled points A and another interpolation signal of the digital audio signal at the resampled points B, and makes a correction to the phase of at least one of the interpolation signals. Thereby, radiation noise can be reduced even if the number of channels of the digital audio signal increases.